India, March 24 -- The Union Public Service Commission (UPSC) has formulated guidelines to release the provisional answer key on its website after conducting the civil services preliminary examination, the Centre said in the Rajya Sabha. The UPSC conducts the civil services examination annually in three stages - preliminary, main and interview - to select officers for the Indian Administrative Service (IAS), Indian Foreign Service (IFS) and the Indian Police Service (IPS), among others.

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